Blender Git Loki

Fix T70522: Sidebars in Clip Editor work incorrectly in Dopesheet mode

Actually, in Dopesheet mode, the regions shouldn't be toggle-able at
all. For the user they should appear to not exist.
Previously the Movie Clip Editor archieved this by setting the region
alignments to NONE, which this restores.

Introduced in 6aef124e7d28.

UI: support passing a function to WorkSpace.status_text_set()

This allows Python operators to draw icons and other UI elements
into the status bar.

Merge remote-tracking branch 'origin/master' into temp-lanpr-cleanup

Cleanup: Fix merge problems.

Merge remote-tracking branch 'origin/master' into temp-lanpr-cleanup

UI: Replace big options button in file browser

The big options button in the lower left is now gone, it's replaced by a
smaller icon toggle button in the upper right.
That means I could also remove code for the region we had just for this
button.
I also added versioning code for the removal, to make sure the region is
removed cleanly when reading old files.

Refactor: Ensure there's always a valid file editor tool region

So far the file browser code had some lazy creation for the tool region,
even though it should always be there. The only reason I can see for
this is compatiblity. So I simply added versioning code to add the
region in case it's not there. Now we should be able to savely assume
the tool region to be there, whithout any unusual lazy-creation.

Remove redundant file bookmarks region toggle operator

For the default keymap we were only using the regular toolshelf
operator, doing this for the industry compatible keymap too now (we
could even remove it there, we don't use it in other editors).

Since we "now" have proper operators for toggling regions, this specific
one is totally redundant.

Rewrite file region handling for non-editor mode

This makes it so that regions only needed when the file browser is
invoked as an operation (e.g. Ctrl+O rather than a regular editor) are
lazy created then, and removed if the file browser is changed into a
regular editor then (e.g. Ctrl+O over regular file browser editor ->
Cancel).

That should remove some troublesome assumptions and makes versioning
redundant.
It also fixes the issue of an empty execute region at the bottom after
cancelling a file operation invoked from a regular file browser editor.

Cleanup: discarded-qualifier warning

Cleanup: Add/use utility to remove regions

Fix empty file options region in regular editor

This would happen when opening a file browser as regular editor, opening
a temporary file browser from there (e.g. Ctrl+O) and cancelling the
operation.
In some cases this would cause most of the editor to be filled with an
empty operator options region:
* Go to Shading workspace
* File -> Append
* Cancel

Cleanup: use braces

Cleanup: quote use

Fix T69593: Color strip won't update

Reviewed By: JacquesLucke

Differential Revision: https://developer.blender.org/D5803

Sequencer: correct fcurve map usage

Fix T69564: Empty fcurve prevents waveform drawing

Add check if fcurve is empty to skip fcurve evaluation.

Reviewed By: JacquesLucke

Differential Revision: https://developer.blender.org/D5805

ImBuf: add planes, channels attributes

D5857 by @cmbasnett

GPencil: Rename function

GPencil: Fix unreported select not working in multiframe mode

The selection was not working because the evaluated frame was only working for active frame, so when the evaluation was changed to use eval data instead of original data, the data was not available and the loop did not use it.

Related to T70116